./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:59:04,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:59:04,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:59:04,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:59:04,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:59:04,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:59:04,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:59:04,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:59:04,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:59:04,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:59:04,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:59:04,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:59:04,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:59:04,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:59:04,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:59:04,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:59:04,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:59:04,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:59:04,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:59:04,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:59:04,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:59:04,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:59:04,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:59:04,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:59:04,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:59:04,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:59:04,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:59:04,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:59:04,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:59:04,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:59:04,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:59:04,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:59:04,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:59:04,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:59:04,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:59:04,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:59:04,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:59:04,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:59:04,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:59:04,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:59:04,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:59:04,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 01:59:04,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:59:04,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:59:04,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:59:04,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:59:04,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:59:04,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:59:04,379 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:59:04,379 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:59:04,380 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:59:04,380 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:59:04,381 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:59:04,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:59:04,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:59:04,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:59:04,382 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:59:04,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:59:04,383 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:59:04,383 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:59:04,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:59:04,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:59:04,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:59:04,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:59:04,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:59:04,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:59:04,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:59:04,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:59:04,388 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:59:04,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:59:04,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:59:04,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:59:04,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:59:04,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:59:04,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:04,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:59:04,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:59:04,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:59:04,391 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:59:04,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:59:04,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:59:04,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:59:04,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:59:04,392 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e213904f46d9e57b153e0058e447b0a5def856d61642628bc56ad0035cdccb [2021-11-23 01:59:04,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:59:04,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:59:04,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:59:04,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:59:04,778 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:59:04,780 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2021-11-23 01:59:04,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/data/960eced2f/140c58dc44e64654af9d662ed615f7b8/FLAGab7719173 [2021-11-23 01:59:05,515 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:59:05,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c [2021-11-23 01:59:05,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/data/960eced2f/140c58dc44e64654af9d662ed615f7b8/FLAGab7719173 [2021-11-23 01:59:05,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/data/960eced2f/140c58dc44e64654af9d662ed615f7b8 [2021-11-23 01:59:05,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:59:05,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:59:05,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:05,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:59:05,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:59:05,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:05" (1/1) ... [2021-11-23 01:59:05,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f1e6e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:05, skipping insertion in model container [2021-11-23 01:59:05,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:05" (1/1) ... [2021-11-23 01:59:05,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:59:05,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:59:06,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2021-11-23 01:59:06,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:06,515 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:59:06,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/sv-benchmarks/c/product-lines/email_spec11_product37.cil.c[43755,43768] [2021-11-23 01:59:06,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:59:06,655 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:59:06,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06 WrapperNode [2021-11-23 01:59:06,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:59:06,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:59:06,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:59:06,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:59:06,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,755 INFO L137 Inliner]: procedures = 124, calls = 186, calls flagged for inlining = 51, calls inlined = 46, statements flattened = 832 [2021-11-23 01:59:06,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:59:06,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:59:06,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:59:06,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:59:06,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:59:06,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:59:06,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:59:06,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:59:06,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (1/1) ... [2021-11-23 01:59:06,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:06,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:59:06,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 01:59:06,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 01:59:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-23 01:59:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-23 01:59:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-23 01:59:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-23 01:59:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-23 01:59:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-23 01:59:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-23 01:59:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-23 01:59:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-23 01:59:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-23 01:59:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 01:59:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-23 01:59:07,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-23 01:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-23 01:59:07,001 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-23 01:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-23 01:59:07,001 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-23 01:59:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:59:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-23 01:59:07,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-23 01:59:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-23 01:59:07,002 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-23 01:59:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-23 01:59:07,003 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-23 01:59:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-23 01:59:07,003 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-23 01:59:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-23 01:59:07,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-23 01:59:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-23 01:59:07,004 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-23 01:59:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:59:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-23 01:59:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-23 01:59:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:59:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:59:07,266 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:59:07,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:59:07,955 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:59:08,287 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:59:08,287 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:59:08,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:08 BoogieIcfgContainer [2021-11-23 01:59:08,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:59:08,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:59:08,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:59:08,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:59:08,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:05" (1/3) ... [2021-11-23 01:59:08,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d484cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:08, skipping insertion in model container [2021-11-23 01:59:08,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:06" (2/3) ... [2021-11-23 01:59:08,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d484cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:08, skipping insertion in model container [2021-11-23 01:59:08,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:08" (3/3) ... [2021-11-23 01:59:08,303 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product37.cil.c [2021-11-23 01:59:08,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:59:08,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 01:59:08,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:59:08,396 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 01:59:08,396 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 01:59:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-23 01:59:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 01:59:08,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:08,430 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:08,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:08,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash -284632055, now seen corresponding path program 1 times [2021-11-23 01:59:08,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:08,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700548574] [2021-11-23 01:59:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:08,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:08,801 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700548574] [2021-11-23 01:59:08,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700548574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:08,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:08,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:59:08,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999929615] [2021-11-23 01:59:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:08,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:59:08,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:59:08,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:59:08,846 INFO L87 Difference]: Start difference. First operand has 141 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 86 states have internal predecessors, (114), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:09,013 INFO L93 Difference]: Finished difference Result 199 states and 266 transitions. [2021-11-23 01:59:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:59:09,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2021-11-23 01:59:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:09,037 INFO L225 Difference]: With dead ends: 199 [2021-11-23 01:59:09,037 INFO L226 Difference]: Without dead ends: 138 [2021-11-23 01:59:09,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:59:09,051 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:09,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-23 01:59:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-23 01:59:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 83 states have internal predecessors, (108), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-23 01:59:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2021-11-23 01:59:09,121 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 54 [2021-11-23 01:59:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:09,123 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2021-11-23 01:59:09,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2021-11-23 01:59:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 01:59:09,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:09,129 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:09,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:59:09,129 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1022432279, now seen corresponding path program 1 times [2021-11-23 01:59:09,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:09,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708374601] [2021-11-23 01:59:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:09,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:09,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:09,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708374601] [2021-11-23 01:59:09,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708374601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:09,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:09,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:59:09,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913519592] [2021-11-23 01:59:09,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:09,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:59:09,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:59:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:09,294 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:09,456 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2021-11-23 01:59:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:59:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 55 [2021-11-23 01:59:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:09,462 INFO L225 Difference]: With dead ends: 195 [2021-11-23 01:59:09,462 INFO L226 Difference]: Without dead ends: 140 [2021-11-23 01:59:09,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:09,466 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:09,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-23 01:59:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-23 01:59:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 85 states have internal predecessors, (110), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-23 01:59:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 189 transitions. [2021-11-23 01:59:09,488 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 189 transitions. Word has length 55 [2021-11-23 01:59:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:09,489 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 189 transitions. [2021-11-23 01:59:09,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 189 transitions. [2021-11-23 01:59:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 01:59:09,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:09,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:09,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:59:09,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1013588921, now seen corresponding path program 1 times [2021-11-23 01:59:09,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:09,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738303752] [2021-11-23 01:59:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:09,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:09,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738303752] [2021-11-23 01:59:09,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738303752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:59:09,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:59:09,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:59:09,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256617996] [2021-11-23 01:59:09,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:59:09,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:59:09,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 01:59:09,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:59:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:09,623 INFO L87 Difference]: Start difference. First operand 140 states and 189 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:59:09,771 INFO L93 Difference]: Finished difference Result 310 states and 437 transitions. [2021-11-23 01:59:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 01:59:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2021-11-23 01:59:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:59:09,777 INFO L225 Difference]: With dead ends: 310 [2021-11-23 01:59:09,777 INFO L226 Difference]: Without dead ends: 188 [2021-11-23 01:59:09,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:59:09,781 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 57 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:59:09,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 334 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:59:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-23 01:59:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2021-11-23 01:59:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 117 states have internal predecessors, (163), 51 states have call successors, (51), 15 states have call predecessors, (51), 15 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 01:59:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2021-11-23 01:59:09,836 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 60 [2021-11-23 01:59:09,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:59:09,837 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2021-11-23 01:59:09,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 01:59:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2021-11-23 01:59:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 01:59:09,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:59:09,847 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:59:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:59:09,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 01:59:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:59:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash -282689252, now seen corresponding path program 1 times [2021-11-23 01:59:09,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 01:59:09,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660860755] [2021-11-23 01:59:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:09,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:59:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:09,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 01:59:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660860755] [2021-11-23 01:59:09,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660860755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 01:59:09,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294437480] [2021-11-23 01:59:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:59:09,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 01:59:09,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 01:59:10,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 01:59:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 01:59:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:59:10,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 01:59:10,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 01:59:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:10,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 01:59:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 01:59:10,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294437480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 01:59:10,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767784850] [2021-11-23 01:59:10,720 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-11-23 01:59:10,720 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 01:59:10,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 01:59:10,732 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 01:59:10,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 01:59:37,719 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 01:59:38,010 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 01:59:38,328 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:00:02,205 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:22,452 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:38,883 WARN L227 SmtUtils]: Spent 16.17s on a formula simplification. DAG size of input: 588 DAG size of output: 441 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:00:48,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1767784850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:00:48,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:00:48,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2021-11-23 02:00:48,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202709840] [2021-11-23 02:00:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:00:48,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 02:00:48,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:00:48,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 02:00:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:00:48,387 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-23 02:00:56,443 WARN L227 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 498 DAG size of output: 414 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:16,666 WARN L227 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 536 DAG size of output: 433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:01:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:01:24,511 INFO L93 Difference]: Finished difference Result 449 states and 696 transitions. [2021-11-23 02:01:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 02:01:24,512 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 61 [2021-11-23 02:01:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:01:24,517 INFO L225 Difference]: With dead ends: 449 [2021-11-23 02:01:24,517 INFO L226 Difference]: Without dead ends: 284 [2021-11-23 02:01:24,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 99.5s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-23 02:01:24,521 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 149 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:01:24,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 2437 Invalid, 1832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:01:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-23 02:01:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 211. [2021-11-23 02:01:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 144 states have internal predecessors, (202), 51 states have call successors, (51), 16 states have call predecessors, (51), 16 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-23 02:01:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2021-11-23 02:01:24,617 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 61 [2021-11-23 02:01:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:01:24,618 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2021-11-23 02:01:24,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-23 02:01:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2021-11-23 02:01:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 02:01:24,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:24,621 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:01:24,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:01:24,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:01:24,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:24,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1606006308, now seen corresponding path program 1 times [2021-11-23 02:01:24,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:24,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253532646] [2021-11-23 02:01:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:24,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:01:24,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253532646] [2021-11-23 02:01:24,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253532646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:01:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169558570] [2021-11-23 02:01:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:24,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:01:24,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:01:24,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:01:25,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:01:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:25,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:01:25,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:01:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:01:25,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:01:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:01:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169558570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:01:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1790705803] [2021-11-23 02:01:25,563 INFO L159 IcfgInterpreter]: Started Sifa with 54 locations of interest [2021-11-23 02:01:25,563 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:01:25,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:01:25,564 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:01:25,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:01:58,886 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2021-11-23 02:01:59,147 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2021-11-23 02:01:59,408 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 240 for LOIs [2021-11-23 02:02:00,799 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 230 for LOIs [2021-11-23 02:02:00,861 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 242 for LOIs [2021-11-23 02:02:02,814 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2021-11-23 02:02:02,855 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2021-11-23 02:02:04,287 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:02:33,196 WARN L227 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:02:53,708 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:14,450 WARN L227 SmtUtils]: Spent 19.21s on a formula simplification. DAG size of input: 591 DAG size of output: 458 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:31,070 WARN L227 SmtUtils]: Spent 14.91s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:03:52,848 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 559 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:03,603 WARN L227 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 469 DAG size of output: 242 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:31,790 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 557 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:04:31,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1790705803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:04:31,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:04:31,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2021-11-23 02:04:31,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476462546] [2021-11-23 02:04:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:04:31,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 02:04:31,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:04:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 02:04:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=2129, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 02:04:31,798 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:04:53,546 WARN L227 SmtUtils]: Spent 19.43s on a formula simplification. DAG size of input: 496 DAG size of output: 450 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:00,995 WARN L227 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 484 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:39,871 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 586 DAG size of output: 427 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:05:51,785 WARN L227 SmtUtils]: Spent 11.27s on a formula simplification. DAG size of input: 598 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:01,204 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 588 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:21,097 INFO L93 Difference]: Finished difference Result 528 states and 811 transitions. [2021-11-23 02:06:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 02:06:21,098 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 67 [2021-11-23 02:06:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:21,102 INFO L225 Difference]: With dead ends: 528 [2021-11-23 02:06:21,103 INFO L226 Difference]: Without dead ends: 363 [2021-11-23 02:06:21,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 242.7s TimeCoverageRelationStatistics Valid=275, Invalid=3757, Unknown=0, NotChecked=0, Total=4032 [2021-11-23 02:06:21,107 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 357 mSDsluCounter, 3956 mSDsCounter, 0 mSdLazyCounter, 4565 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 4024 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 4565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:21,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 4024 Invalid, 4626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 4565 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2021-11-23 02:06:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-23 02:06:21,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 299. [2021-11-23 02:06:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 218 states have (on average 1.463302752293578) internal successors, (319), 221 states have internal predecessors, (319), 59 states have call successors, (59), 22 states have call predecessors, (59), 21 states have return successors, (59), 55 states have call predecessors, (59), 58 states have call successors, (59) [2021-11-23 02:06:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 437 transitions. [2021-11-23 02:06:21,312 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 437 transitions. Word has length 67 [2021-11-23 02:06:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:21,313 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 437 transitions. [2021-11-23 02:06:21,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 27 states have internal predecessors, (34), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:06:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 437 transitions. [2021-11-23 02:06:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:06:21,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:21,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:21,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:06:21,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:21,545 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:21,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1044951433, now seen corresponding path program 1 times [2021-11-23 02:06:21,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:21,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964919201] [2021-11-23 02:06:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:21,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:06:21,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:21,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964919201] [2021-11-23 02:06:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964919201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:06:21,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370895790] [2021-11-23 02:06:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:21,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:21,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:21,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:06:21,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:06:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:06:21,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:06:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:06:22,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:06:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:06:22,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370895790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:06:22,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598829831] [2021-11-23 02:06:22,176 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2021-11-23 02:06:22,176 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:06:22,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:06:22,177 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:06:22,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:06:57,306 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:06:57,566 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2021-11-23 02:06:57,635 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 447 for LOIs [2021-11-23 02:06:57,760 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:06:58,017 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2021-11-23 02:06:58,089 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:07:21,946 WARN L227 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:43,600 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:07:56,639 WARN L227 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 623 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:08:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1598829831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:20,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:08:20,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2021-11-23 02:08:20,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737692240] [2021-11-23 02:08:20,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:20,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 02:08:20,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:08:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 02:08:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 02:08:20,853 INFO L87 Difference]: Start difference. First operand 299 states and 437 transitions. Second operand has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-23 02:08:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:37,804 INFO L93 Difference]: Finished difference Result 583 states and 894 transitions. [2021-11-23 02:08:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 02:08:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 70 [2021-11-23 02:08:37,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:37,808 INFO L225 Difference]: With dead ends: 583 [2021-11-23 02:08:37,808 INFO L226 Difference]: Without dead ends: 418 [2021-11-23 02:08:37,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 91.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 02:08:37,811 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 200 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:37,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 3089 Invalid, 2826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:08:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-23 02:08:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 366. [2021-11-23 02:08:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 278 states have (on average 1.485611510791367) internal successors, (413), 282 states have internal predecessors, (413), 63 states have call successors, (63), 25 states have call predecessors, (63), 24 states have return successors, (63), 58 states have call predecessors, (63), 62 states have call successors, (63) [2021-11-23 02:08:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 539 transitions. [2021-11-23 02:08:38,014 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 539 transitions. Word has length 70 [2021-11-23 02:08:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:38,015 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 539 transitions. [2021-11-23 02:08:38,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2021-11-23 02:08:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 539 transitions. [2021-11-23 02:08:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:08:38,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:38,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:38,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:38,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:38,219 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:38,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1297091536, now seen corresponding path program 1 times [2021-11-23 02:08:38,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:38,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831530013] [2021-11-23 02:08:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:38,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:08:38,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:08:38,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831530013] [2021-11-23 02:08:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831530013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:08:38,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934891840] [2021-11-23 02:08:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:38,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:38,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:38,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:38,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_215b7d3b-83f3-4d96-bbd9-01931aa1394d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:08:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:38,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:38,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:08:38,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 02:08:38,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934891840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:08:38,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643865641] [2021-11-23 02:08:38,875 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2021-11-23 02:08:38,875 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:08:38,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:08:38,876 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:08:38,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:09:16,421 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2021-11-23 02:09:16,679 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2021-11-23 02:09:16,928 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 247 for LOIs [2021-11-23 02:09:18,431 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2021-11-23 02:09:18,473 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 247 for LOIs [2021-11-23 02:09:20,258 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 240 for LOIs [2021-11-23 02:09:20,300 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 470 for LOIs [2021-11-23 02:09:21,790 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:09:44,847 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 470 DAG size of output: 346 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:04,816 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 514 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:20,565 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 580 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:34,325 WARN L227 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 580 DAG size of output: 444 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:10:43,110 WARN L227 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 584 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)